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Well the whole point of gluten-free is to be free to gluten... So what would be your goal in comparing these two? Do you have any reasons for wanting to try either?
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Ivo Flipse♦May 23 '11 at 12:09

Well, I intend low carb to be my long term diet choice and I figured that low glycemic foods are foods which are considered ok under a low carb diet.
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PhyllostachysMay 23 '11 at 18:53

The paleo diet and diets similar to that avoid all grains. They associate a number of bad things with grains and claim that our paleolithic ancestors didn't eat like that. Since no-one is still alive from that era, this is of course an educated guess.

The pancreas secretes insulin when the blood sugar gets high, which plays a role in regulating blood sugar and trapping excess sugar as fat

The pancreas also secretes glucagon when the blood sugar gets low, which plays a role in regulating blood sugar and converting fat to blood sugar.

Foods with a high glycemic impact will cause the pancreas to secrete more insulin than those with a low glycemic impact

For people who are very sensitive to insulin levels due to being insulin resistant or diabetic, you absolutely have to avoid the high glycemic impact foods. However, it doesn't hurt people without those ailments to avoid high glycemic impact foods.

The Paleo diet claims that a more natural source of carbs would be your whole vegetables--particularly the ones that you do not have to dig to get (i.e. not tubers like potatoes). The general concept that the more processed a food becomes the less healthy is fairly sound. In short the body doesn't have to work as hard to break it down and incorporate it, and the processing tends to remove the most useful elements from the food (vitamins and minerals).

While I personally think that the Paleo diet takes certain aspects too far, such as removing all grains and legumes from your diet, in general there's enough to its principles to learn from.